Valtteri Bottas is confident his Williams FW36 can complete the Australian Grand Prix race weekend without any major issues following its reliable showing during pre-season testing.

With the start of a much anticipated 2014 F1 season now just days away, much of the focus leading up to the Australian opener has been trained on how reliable the new cars are likely to be.

So far, Mercedes-engined cars have proven quickest and most dependable during pre-season testing when compared with its Ferrari and Renault rivals, whilst the Williams' FW36 chassis has in turn turn proved rapid too.

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Indeed, though the Finn, who will be starting his second season with the rebranded Williams Martini Racing team, admits reliability could be a determining factor for the opening half of the season, he is optimistic his car can be quick and consistent from the off.

"We are quite confident that we can run the whole weekend without any major issues," he told Crash.net. "In testing, we have had the main issues covered and there weren't many. I think we are in a better position than many other teams. I think the first four races, or even during the first half of the season, reliability will be very important and we are looking good on that."

With Renault and reigning champions Red Bull particularly suffering with the radical regulation changes heading into 2014, Bottas - who drove a Renault-powered Williams last season - is nonetheless certain the two firms will bounce back swiftly.

"In the short time from Bahrain to Melbourne, I guess it'll be quite hard [for Renault] to make many big changes," he continued. "For me it is only a matter of time before Renault and Red Bull get back there. Renault knows how to make an engine and Red Bull knows how to make a quick car, so it's only a matter of time - hopefully for us it will be later in the year!"